A boat sales from port O inthe direction N30°W Use a scale of 5mm to present 2km and do an Accurate Construction to indicate the displacement of the Boat After it has travelled 20km from port O , lebel O in your construction​

1) when you rub your hands together quickly, the kinetic energy is converted to mechanical energy.2) thermal energy from the sun travels to earth as infrared waves.3) energy is transferred through the matter of space by electromagnetic waves. 4) when a match is burned, chemical potential energy is converted to thermal and radiant energy. 5) seismicwaves are caused by back and forth movement , or vibration, of an object. 6) mechanicalenergy in an engine changes thermal energy into kinetic energy to make a car move.

The answer is  a.first and third quarters 

What formula  this one  (x_/